Solar lamp



FIG. 1 is a perspective view of a solar lamp, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevation view which is a mirror image of the front elevation view;

FIG. 4 is a left elevational view thereof, the right elevational view is a mirror image of the left elevational view;

FIG. 5 is top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a solar lamp, as shown and described. 